401621973336 has 192 divisors, whose sum is σ = 1138608151200. Its totient is φ = 127762790400.

The previous prime is 401621973197. The next prime is 401621973341. The reversal of 401621973336 is 633379126104.

It is a super-2 number, since 2×401621973336² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401621973291 and 401621973300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 61585756 + ... + 61592276.

Almost surely, 2^401621973336 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401621973336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (569304075600).

401621973336 is an abundant number, since it is smaller than the sum of its proper divisors (736986177864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401621973336 is a wasteful number, since it uses less digits than its factorization.

401621973336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7010 (or 7003 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 45.

The spelling of 401621973336 in words is "four hundred one billion, six hundred twenty-one million, nine hundred seventy-three thousand, three hundred thirty-six".